A Philadelphia police officer was shot and killed early Friday as he served a homicide warrant at a home, and several people were arrested, including the subject of the warrant, officials said.
Cpl. James O'Connor, 46, was shot around 5:45 a.m. in the city's Frankford section, officials said. He was shot in the shoulder above his bulletproof vest when officers entered the home, and two people in the home were wounded by return fire from another officer, officials said.
